Finding the Fourth Proportional to 280,622.72, 387,259.71 and 159,764.00

Step by Step Solution

1. Step 1: Write the proportion equation
   280,622.72 : 387,259.71 = 159,764.00 : x
2. Step 2: Convert to fraction form
   280,622.72/387,259.71 = 159,764.00/x
3. Step 3: Cross multiply
   280,622.72x = 387,259.71 × 159,764.00
4. Step 4: Simplify right side
   280,622.72x = 61,870,160,423.48
5. Step 5: Solve for x
   x = 61,870,160,423.48/280,622.72
6. Step 6: Final answer
   x = 220,474.52